Finding the Fourth Proportional to 21,943.52, 32,918.69 and 7,148.99

Step by Step Solution

1. Step 1: Write the proportion equation
   21,943.52 : 32,918.69 = 7,148.99 : x
2. Step 2: Convert to fraction form
   21,943.52/32,918.69 = 7,148.99/x
3. Step 3: Cross multiply
   21,943.52x = 32,918.69 × 7,148.99
4. Step 4: Simplify right side
   21,943.52x = 235,335,185.28
5. Step 5: Solve for x
   x = 235,335,185.28/21,943.52
6. Step 6: Final answer
   x = 10,724.59